Is the 2001 S rear wheel bearing different from 2002-2004 S?

[Fluellen]

As the title says...

I looked up PET, and for the rear wheel bearing for the S models, it shows two different part numbers:

for S models up to and including 2001, 999.053.042.07
for S models from 2002 onward, 999.053.054.05

Are they really different?

Pelican only sells the 054.05 version, but frankly I don't trust their parts catalog anymore. A month ago or so ago I bought wheel bearings from them that they had listed as front or rear, Boxster or S. Well... turns out they are only for the front in the S model. They have since corrected their catalog, but I still have two front bearings sitting on my desk...

Thanks!